\begin{tikzpicture}
    \tkzDefPoints{0/0/A, 2/0/B, 3.2/2/C, 1.2/2/D, 2/2/E, 0/2/F}

    \tkzDrawPolygon[dashed](A,B,E,F)
    \tkzDrawPolygon(A,B,C,D)
    \tkzLabelPoints[above](C,D,E,F)
    \tkzLabelPoints[below](A,B)
\end{tikzpicture}

